水是人及一切生物生存所必需的，爱护水资源从我做起，必须节约每一滴水，发现水龙头滴
题型：问答题
问题：
水是人及一切生物生存所必需的，爱护水资源从我做起，必须节约每一滴水，发现水龙头滴水要及时关闭．如果一个水龙头每秒钟滴水4滴，平均20滴水为1毫升，试计算一昼夜漏水多少升．
题型：问答题
Knowing about yourself not only means finding out what you’re good at and what you like，but also means discovering what you’re not good at and what you don’t like．Both help you to see your aim in life．
Although most students would be unhappy if they failed a very difficult physics examination，they have in fact learned a lot about themselves．They know that they should not become engineers or physical scientists．So failing can help a student to live a happier life if he learns something from it．They may then decide on their aims and choose the work they like and are fit for．
It is impossible to decide whether you like something until you have tried it．If you decide to play the piano，you need to take more than one lesson before knowing whether you are really interested in it or able to do well．It is not enough if you want to be a great pianist．You also have to like the hard practice and long training．If you enjoy being a great pianist but hate the work，forget it．
It’s a good plan to try as many ideas as possible when you are young．Then you will find out what your true interests are．
小题1:If you say you really know yourself， ．
A．you know what you don’t like
B．you know what you are good at
C．you have no interest in y
our work
D．you’ve got the whole picture of yourself小题2:Failing can turn into something good ．
A．if you have aim in life
B．if your decision is fight
C．if you lead a happier life
D．if you learn something from it小题3:What can we learn from the second paragraph?
A．Failure is a better mirror
B．Success is more 
helpful
C．No one is fit for the job of a physical scientist
D．Physics can help students live a better life